/Engine/Plugins/Media/PixelStreaming/Source/PixelStreaming/Public/PixelStreamingSessionDescriptionObservers.h
FPixelStreamingCreateSessionDescriptionObserver ( const [FSuccessCallback](API\Plugins\PixelStreaming\FPixelStreamingCreateSessionDesc-\FSuccessCallback) & successCallback, const [FFailureCallback](API\Plugins\PixelStreaming\FPixelStreamingCreateSessionDesc-\FFailureCallback) & failureCallback )